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Enthalpy Change of Combustion? (AS Chem) watch

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    Could somone please do show me how a question like this is done??

    These are the measurements form my experiment:
    Start: 23degreesC (water).
    199.6g ethanol
    30ml of water

    End: 70degrees
    199.06g of ethanol.

    Could somone pleasee show me how to figure out the energy absorbed by the water?? (i reall have no idea) o:

    Thanks!
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    (Original post by Peachesishere)
    Could somone please do show me how a question like this is done??

    These are the measurements form my experiment:
    Start: 23degreesC (water).
    199.6g ethanol
    30ml of water

    End: 70degrees
    199.06g of ethanol.

    Could somone pleasee show me how to figure out the energy absorbed by the water?? (i reall have no idea) o:

    Thanks!
    The energy absorbed by the water (ΔE) = mass(of water being heated) x specific heat capacity x temperature change

    ΔE = mcΔT

    To calculate per mole of ethanol divide the value of ΔE by the number of moles of ethanol burned
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    (Original post by charco)
    The energy absorbed by the water (ΔE) = mass(of water being heated) x specific heat capacity x temperature change

    ΔE = mcΔT

    To calculate per mole of ethanol divide the value of ΔE by the number of moles of ethanol burned
    Ohhh ok thankyouu
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    q=mct (change in t)

    m=mass
    c=heat capacity
 
 
 
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